Intel Desktop Board DH57DD Technical Product Specification

For information about Refer to

The location of the USB connectors on the back panel Figure 9, page 40

The location of the front panel USB headers Figure 10, page 41

1.9 SATA Interfaces

The board provides five internal SATA connectors (black) and one external SATA

connector through the PCH, which support one device per connector.

The PCH provides independent SATA ports with a theoretical maximum transfer rate of

3 Gb/s per port. A point-to-point interface is used for host to device connections,

unlike Parallel ATA (PATA) IDE which supports a master/slave configuration and two

devices per channel.

The underlying SATA functionality is transparent to the operating system. The SATA

controller can operate in both legacy and native modes. In legacy mode, standard IDE

I/O and IRQ resources are assigned (IRQ 14 and 15). In Native mode, standard

Conventional PCI bus resource steering is used. Native mode is the preferred mode

for configurations using the Windows* XP, Windows Vista*, and Windows 7* operating

systems.

For more information, see: http://www.serialata.org/

For information about Refer to

The location of the SATA connectors Figure 10, page 41

1.10 Legacy I/O Controller

The Legacy I/O Controller provides the following features:

• One serial port

• Serial IRQ interface compatible with serialized IRQ support for Conventional PCI

bus systems

• Intelligent power management, including a programmable wake-up event interface

• One back panel CIR emitter header

• One front panel CIR receiver header

The BIOS Setup program provides configuration options for the Legacy I/O controller.

1.10.1 Serial Port

The serial port is implemented as a 10-pin header on the board. The serial port

supports data transfers at speeds up to 115.2 kbits/sec with BIOS support.

For information about Refer to

The location of the serial port header Figure 10, page 41